Price theory refers to pricing mechanisms for a particular product or service. Thus two types of methods for pricing are determined:
According to the expenses: According to this method, prices are formed by making a relationship between the costs of our product or service and the amount of profit that you want to earn.
Price = (Unit cost * percentage of desired utility) + unit cost
According to the market: This method encourages us to determine our prices according to the market and the prices of similar products or services that are provided within it, so in a referential way we can constitute a price in relation to the real market conditions.
wiki